Which of the following is caused by gibberellins?

Bolting in cabbage

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Morphogenesis in tobacco callus

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Rapid divisions in carrot cells

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Elongation of oat coleoptile

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Solution

The correct option is A Bolting in cabbage
Bolting (internode elongation) just prior to flowering in cabbage is a test for gibberellin. Gibberelin helps in stem elongation.

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